Printing unit



FIG. 1 is a front perspective view of a printing unit in accordance withthe present invention;

FIG. 2 is a right side view of the printing unit;

FIG. 3 is a rear elevation view of the printing unit in accordance withthe present invention;

FIG. 4 is a left side view of the printing unit;

FIG. 5 is a front elevation view of the printing unit;

FIG. 6 is a top plan view of the printing unit; and,

FIG. 7 is a rear perspective view of the printing unit in accordancewith the present invention.

The broken lines are for illustrative purposes only and form no part ofthe claimed invention.

The ornamental design for a printing unit, as shown and described. 